Unit 11 Ratio and proportion Challenge 16 a How many different ways can you divide this rectangle into two parts in the ratio 1 : 3? b How many of your answers show a symmetrical pattern? 11 Strengthen Simple proportion and best buys 1 A bus ticket costs £3. Work out the cost of a 2 tickets b 5 tickets. 2 It costs £32 for 4 teenagers to go to the cinema. How much does it cost for a 8 teenagers b 2 teenagers c 10 teenagers? 3 Harry can wash 6 cars in 1 hour. How many cars can he wash in 3_ 12 hours? Q2a hint £32 ? ? Q3 hint Cars : Hours ϫ3 12 4 Q2b hint £32 £32 Reasoning Which is better value for money: 200 g of lotion for £2.50 or 300 g of lotion for £3.60? 6 : 1 : 3 12 1 hour ϫ3 12 Q4 strategy hint Work out how much you pay for 100 g of each. £2.50 £3.60 100 g 100 g 100 g 100 g 100 g Ratio and proportion 1 Andie makes a bracelet with green beads and yellow beads. She uses 1 green bead for every 2 yellow beads. The bracelet has 12 beads altogether. How many beads are a green b yellow? Q1 hint G Y Y G Y Y G Y Y G Y Y G Y Y Homework, practice and support: Foundation 11 Strengthen 335